package com.qfedu.dao.impl;

import com.qfedu.dao.GenaralDao;

/**
 * @author:zhengyilong
 * @email:1797344574@qq.com
 * @phone:13479394730
 * @desc:
 * @DateTime:2022/5/4 11:19
 **/
public class BookDaoImpl {

    public int insert(){
        System.out.println("---insert---book");
        //throw new NullPointerException();
        return 5;
    }

    public void delete(int a){
        System.out.println("---delete---book");
    }

    public void update(){
        System.out.println("---update---book");
    }

}

